Franklin haedinge



F. HARDINGE.

SEAL FOR FASTENlNG DEVICES.

APPLICATION FILED MAY19. 1915.

1,315,832. PatentedSept. 9,1919.

WWW

minesses fizz/enter M a r 7 Ham/din ifardpye By I I 1 UNITED STATESPATENT OFFICE.

FRANKLIN HABDINGE, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO I-IARDINGEBROTHERS,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

smt FOB rnsrnmno DEVICES.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application and Kay 19, 191a Serial No. 29,646.

To all whom it may concern:

Be it known that I, FRANKLINHARDINGEQ citizen of the United States,residin at Chi cago, in the county of Cook and tate of Illinois, haveinvented a certain new and useful Improvement in Seals for FasteningDevices, of which the following is a full,

clear, concise, and exact description, reference beinghad to theaccompanying drawin s, forming a part of this specification.

y invention relates to seals'for fastening devices and has for itsobject the provision of a seal adapted to be used'in. connec- I tionwith fastening devices, such as screws,

etc, whereby removal of the devices-Without detection-is prevented. y

Generally the device of myyinvention consists of a cup shaped memberarranged to 'be securely held by the screw or fastening 'stood byreferring to the accompanying drawings, in which:

Figure 1 is a front elevational view of a watchmans clock key box,provided with the device of my invention.

Fig. 2 is a detail view of the cup member, forming a part of the seal.

Fig. 3 is a detail view of the dish-shaped seal, per se.

Fig. 4 is a cross-sectional view of the seal of my invention, showninconnection with a screw. The seal per se in this figure is shown inposition, before it is flattened to cover the head of the screw.

Fig. 5 is a view similar to Fig.4, with the seal member flattened. Thisfigure is taken along the line 5+5 of Fig. 1, looking in the directionindicated by the arrows.

Similar characters of reference refer to similar parts throughout theseveral views.

Referring first to Fig. 1, I have illustrated at 6 a watchmans clock keybox-which carries a key 7 attached to the end of a suitable.

chaln 8. This chain 8 is connected in any suitable Way to the box 6. Ihave shown this box .in connection with the seal deviceof my inventionbut it will readily be understood that the seal may be used inconnection with any article to be held by fastening devices.

The box 6, or article to be secured, is provided with an aperture at 9,between the wall of which and screw 10 is arranged to be clamped the cup11 of the seal. This cup 11 carrles a flange 14 which extends inwardly,as illustratedin Figs. 4 and 5. Arranged to extend into the'cup 11 is adishshaped seal 1%, preferably made of light material such as aluminum.The diameter of thls dish-shaped seal is slightly less than the diameterof the opening, leading into cup 1].. This difference in-..diameterpermits the seal 12 to be inserted into the cap, as most clearly shownin Fig. 4.

After the seal has thus been inserted, the

seal is flattened bv means of a suitable tool,

tothe position illustrated in Fig. 5. The flattening of the seal member12 causes the same to spread outwardly, so as to engage the inner .wallof the cup member 11. Removal of the seal is then prevented due to theflangell, extending over the same.

In Figs. 4 and 5, 6 illustrates the article to beheld and 13 illustratesa Wall or support to which the article is to be secured. In removing thescrew 10-fr0m the wall 13, after the seal has been attached thereto, thedisk 1.2 must be removed, the removal of which necessarily causesmutilation 0f the same.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is- 1. The combination with ascrew, of a sheet metal cup having a centrally located aperture throughwhich the screw extends, the aperture being smaller than the head of thescrew so as to prevent removal of the cup over. the screw head, a dishedmetal seal adapted to be inserted into the container over the head ofthe screw and flattened to cover a larger area, and a flange carried bythe cup for holding the seal when flattened.

2. The combination with a screw, of a sheet metalcup having an internalgroove prevent removal of the cup over the screw In Witness whereof, Ihave hereunto subhead, and a dished metal seal adapted to be scribed myname this 17th day of M; y A. D.

. inserted into the container over the head of 1915.

the screw and flattened to cover a larger FRANKLIN HARDINGE. area,the-seal when flattened projecting into Wltnesses: said internal groovewhereby removal of MARY A. COOK,

the seal is prevented unless it is mutilated. A. C. AHLBERG.

